肖燕鹏老师提出了椭圆曲线的八种作法,笔者又发现了另外三种作法,并且按照定义用几何方法验证了轨迹为圆锥曲线,供大家参考。方法一:圆伸缩法1.轨迹作法第一步:作出直角坐标系; 第二步:在x,y正半轴上任意作点A,B,测量出点A的横坐标、点B的纵坐标,作为椭圜的两个半轴a,b,计算; Professor Xiao Yanpeng proposed eight methods for elliptic curves. The author found three other methods and used geometric methods to verify the trajectories as conic curves for reference. Method one: Circular telescoping method 1. Trajectory method The first step: make rectangular coordinate system; Step 2: Arbitrary point A, B on the x, y positive half-axis, measure the abscissa of point A, the vertical of point B Coordinates, calculated as the two half-axes a, b of the ellipsoid;